Build your own steel reinforced storm shelter

Depending on the expected situation the door might be better off as a portal style with bank vault style pins inserted into the door frame all the way around and the ability to be pulled in or pushed out. The pin, lever and socket assembly should be able to be dismantled (as much as needed) in case something hits the door and damages or bends a pin.. say a bolted in edge ring which can be unbolted to release all the pins if they become jammed, yet it’s still very strong. (Assemble with Never Seez and keep a socket wrench in the emergency room.) You could also weld a small box into an upper a corner and drill holes to the outside world and install a battery powered PA or some kind of alarm/horn to call for help. What about scuba air tanks and some sort of ventilation port? If there’s a gas leak at the home or in the area this could quickly become a coffin. A scuba tank migh...